Beet campaign

The beet field is being harvested. Beets are transported to 3 plants and three trucks. The first car returns to the field three times an hour, the second car after 30 minutes, and the third car five times an hour. All cars left at 8 in the morning. How many cars do we count in the field between 9.30 and 11.20?

Correct answer:

n =  19

Step-by-step explanation:

a: 9.40, 10.00, 10.20, 10.40, 11.00, 11.20 b: 9.30, 10.00, 10.30, 11.00 c: 9.34, 9.48, 10.00, 10.12, 10.24, 10.34, 10.48, 11.00, 11.12  n=6+4+9=19



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